How to Convert STP to STL Free, Step by Step
Need an STL from an STP? Here is how to convert STP to STL, what usually goes wrong, and how to get a file you can use first time.
Why convert STP to STL?
An STL is a surface made of triangles, with no colour, units or structure beyond the mesh. The universal 3D printing format. Every slicer takes one.
- 3D printing.
- Extruding a flat vector into a solid.
- CNC roughing.
Where most converters let you down
Plenty of tools will happily take your STP and give you something back. The trouble is what they give you: many lose units, flip axes or hand you a mesh with holes. You only find out later, when the file will not cut, print, import or open the way you expected.
What you actually want is the model in the format you need, checked before download. That is the standard this STP to STL converter is built to.
How to convert STP to STL in 3 steps
- Open the STP to STL converter and drop in your STP.
- Check the result in the preview and adjust the settings if you need to.
- Download the STL.
Why Veconvert is the better STP to STL converter
- See it in 3D. Rotate and inspect before saving.
- Watertight check. Holes are reported.
- No CAD install. Works in the browser.
- Nothing uploaded. Designs stay private.
What happens to your file
An STP is read in your browser with the OpenCascade kernel compiled to WebAssembly, which turns exact CAD surfaces into a fine triangle mesh, and shown in 3D so you can turn it round.
The conversion runs in your browser, so the file is never uploaded: client work, statements and unreleased designs stay on your computer.
Getting the best STL: mistakes to avoid
- Check the reported size: STL and OBJ carry no units, so millimetres are assumed.
- For printing, 3MF keeps units and colours that STL drops.
What it costs
Yes, converting is free: the conversion and checking the result cost nothing, and the work runs in your browser, so nothing is uploaded. The side-by-side preview on the converter pages comes with a free account. Saving the finished file is paid: $3.49 for one file ($3.99 for a technical file such as DXF, G-code, STL or embroidery) with no account needed, or included in a plan from $6.99 a month.
You see the result before you spend anything, so you only pay for a file you are happy with.
Frequently asked questions
How do I convert STP to STL?
Drop your STP into the box at the top of this page and press Convert to STL. The conversion runs in your browser in a few seconds. Check the result, then download an STL.
Will the STL open in Cura, PrusaSlicer and Bambu Studio?
Yes. The file is a standard STL, written to the format’s specification, and opens in Cura, PrusaSlicer and Bambu Studio and other software that reads STL.
Is it free?
Yes, converting is free: the conversion and checking the result cost nothing, and the work runs in your browser, so nothing is uploaded. The side-by-side preview on the converter pages comes with a free account. Saving the finished file is paid: $3.49 for one file ($3.99 for a technical file such as DXF, G-code, STL or embroidery) with no account needed, or included in a plan from $6.99 a month.
Is my file uploaded?
The conversion runs in your browser, so the file is never uploaded: client work, statements and unreleased designs stay on your computer.